This part fits the following vehicles:

#27150 - Reedy RC4020A HV Digital Competition Crawler Servo

#27153 - Reedy RT5012A HV Digital Competition 1:8 Servo

#27154 - Reedy RS1606A Low-Profile Titanium Gear Brushless Hi-Speed HV Servo

#27155 - Reedy RT2007A Low-Profile Titanium Gear Brushless Hi-Torque HV Servo